Japan vs 江戸ものさし
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Japan
Easily convert between Japanese and US units for length, weight, speed, volume, temperature, area, currency, and time zones. This tool is useful for travel, daily life, work, and study, offering a wide range of conversion categories.
- Length conversion
- Weight conversion
- Speed conversion
- Volume conversion
- Temperature conversion
- Area conversion
- Currency conversion
- Timezone conversion
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This is a handy tool for easy and convenient everyday unit conversions. It is equipped with features useful in various situations, from travel and daily life to work and study. With this app, you can convert units in the following categories: 1. Length (millimeters, centimeters, meters, kilometers ↔ inches, feet, yards, miles) 2. Weight (milligrams, grams, kilograms, tons ↔ ounces, pounds, stones, short tons) 3. Speed (meters/second, kilometers/hour ↔ feet/second, miles/hour) 4. Volume (cubic millimeters, cubic centimeters, cubic meters, liters ↔ cubic inches, cubic feet, fluid ounces, gallons) 5. Temperature (Celsius ↔ Fahrenheit) 6. Area (square millimeters, square centimeters, square meters, hectares ↔ square inches, square feet, acres) 7. Currency (dollars ↔ yen, using the latest exchange rate) 8. Timezone (Japan Standard Time ↔ Eastern Standard Time, Central Standard Time, Mountain Standard Time, Pacific Standard Time, Alaska Standard Time, Hawaii Standard Time) [Premium Version] - No ads within the app - Unlimited number of favorite registrations Terms of Use: https://jpusconvert-app.github.io/terms.html Privacy Policy: https://jpusconvert-app.github.io/privacy.html
江戸ものさし
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時代劇を観ていて「1両って今のいくら?」と思ったことはありませんか?『江戸ものさし』は、江戸時代の通貨や度量衡(長さ・重さ・容積など)の単位を現代の数値に簡単換算できるアプリです。使い方はシンプルで、知りたい単位を選んで数値を入力するだけ。たとえば江戸の貨幣である「両・分・朱・文」を現在の日本円に換算したり、長さの単位「寸・尺・間・里」をメートルやキロメートルに直したりできます。1両が何円か、1尺が何センチかといった疑問がパッと解消! このアプリがあれば、江戸時代の金銭感覚や距離感をリアルに体感できます。時代劇や歴史小説の中の金額・距離の意味が直感的に理解できるので、物語の世界にもっと入り込めること間違いなし。難しい専門知識は不要です。「今と昔のものさし」を片手に、江戸の世界を覗いてみませんか?きっと歴史コンテンツが今まで以上に楽しくなりますよ!
Screenshots
Verdict
The clearest difference is in-app purchases: 江戸ものさし at none against Japan's 1. Japan's advantage is update cadence (weekly vs every 6 weeks). On price, ads, device support and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Japan sells 1 one-off in-app purchase. 江戸ものさし asks for nothing beyond the download.
Japan ships an update weekly, 江戸ものさし every 6 weeks. The most recent releases landed on November 4, 2026 and October 30, 2026 respectively.
| Parameter | Japan | 江戸ものさし |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (20 ratings) — better | — |
| Number of ratings | 20 — better | — |
| Update frequency | Weekly — better | Every 6 weeks |
| Ads | Yes | Yes |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16.2 — better | 17.1 |
| Further details — not scored | ||
| Size | 18 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | Koya Nambo | Yusuke Kiyoi |
In-app purchases
Japan
- Premium$3.99
江戸ものさし
No in-app purchases









